Transverse load and orientation measurement with multicore fiber Bragg gratings

Manuel Silva-López, William N. MacPherson, Cheng Li, Andrew J. Moore, James S. Barton, J. D C Jones, Donghui Zhao, Lin Zhang, Ian Bennion

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


We demonstrate the sensitivity of Bragg gratings in a multicore fiber to transverse load. The Bragg peaks are split because of stress-induced birefringence, the magnitude of which depends upon the load and grating position relative to the load axis. Experiments show that a set of gratings in a four-core fiber can measure a load axis angle to ±5° and a load magnitude to ±15 N m-11 up to 2500 N m-1. We consider alternative designs of multicore fiber for optimal load sensing and compare experimental and modeled data. © 2005 Optical Society of America.

Original languageEnglish
Pages (from-to)6890-6897
Number of pages8
JournalApplied Optics
Issue number32
Publication statusPublished - 10 Nov 2005


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